[Mgs] Caliper rebuild MGA 1600 MKII

[Pat Harris - "sammler"]

I'm gathering material for rebuilding the calipers, converting them to 
the MGB pistons.  The seal kit was purchased along with the pistons as a 
rebuild kit.

Barney's web site states that the seal has a square cross section and I 
just read at a MGB page that
 
"The plain seal has a tapper[sic] so make sure that the high side is to 
the inside of the caliper."

The /MGA Workshop Manual /illustration shows a taper on the outer part 
of the seal and the cylinder of the caliper has a groove which is 
designed to accept a tapered surface; this results in the flat part of 
the seal contacting the side of the piston.

The rebuild kit I purchased has seals which appear to have a square 
cross section.

Square or tapered, that is the question?  If it be tapered from whence 
cometh such?

Thanks,
Pat